Two Phones using same ring app

Being new to this, I have fully installed the ring app (have not wall mounted it yet) on my phone, went through the password set up, etc., etc., etc. It appears to be working fine. Now, will my husband, in order to use it, have to go through the whole set-up process also on his phone, or is there a possible short-cut. We do have Alexa by the way Believe it or not, I do not know anybody with ring or I might have been able to ask them.